In this document, we will try to answer a fundamental question of physical science, "Why do things start to move, slow down, speed up, stop moving or change direction?" In answering these core questions we can develop concepts that can...

[Free Registration/Login may be required to access all resource tools.] Understand the effects of magnitude of force pairs between objects. Know the differences between kinetic and static friction.

Learn about forces (push or pull), gravity, and friction in this module by training dolphins.

Provides a long list of physics formulas for easy reference.

By the end of this section, you will be able to define net force, external force, and system; understand Newton's second law of motion; and apply Newton's second law to determine the weight of an object.

Students are introduced to the concepts of torque, power, friction and gear ratios. Teams modify two robotic LEGO vehicles by changing their gear ratios, wheel sizes, weight and engine power, while staying within a limit of points to...

This University of Oklahoma meteorology tutorial explores both high and low pressure systems--how they form and the different forms they take.

Experiment how torque causes an object to rotate. This interactive simulation shows how angular acceleration, moment of inertia, angular momentum, and torque relate to one another.

Which object takes more energy to push up a ramp: a file cabinet, a refrigerator, a piano, or a sleepy dog? Find out in this ramp simulation when you change the angle of the incline, change the objects, or change the friction on the ramp.

Students must determine the force of friction on a car on a turn and the maximum speed the car could navigate a turn.

This slide show presentation helps the learner understand how normal force affects the amount of friction.

[Free Registration/Login may be required to access all resource tools.] Definition of friction, why it occurs, and the factors that affect it.

This activity is a take off of Galileo's experiment with the inclined planes to show that an object in motion would stay in a straight line motion if no outside forces acted were acting on it. In this version, students will roll a ball...

[Free Registration/Login Required] Learn about kinetic friction and how objects slide to a stop under the influence of friction.

In this activity, learners will use different materials to find the most effective way to use an inclined plane (in other words, moving an object with as little force as possible). This is a guided inquiry. Although the students will be...

A collection of resources on how humans use machines and tools to meet their needs. Covers simple and complex machines, subsystems that transfer forces, mechanical advantage, speed ratio, the effect of friction, efficiency, the science...

By the end of this section, you will be able to define drag force and model it mathematically, discuss the applications of drag force, define terminal velocity, and perform calculations to find terminal velocity.

A lesson about friction can be found on this website. Students will experiment to see how motion and frictional force affect the game of football.

Review the key concepts, equations, and skills for friction, including how to find the direction and magnitude of the friction force.

Learners learn about friction and drag - two different forces that convert energy of motion to heat. Both forces can act on a moving object and decrease its velocity. Students learn examples of friction and drag, and suggest ways to...

This slide show presentation introduces the idea of the coefficient of kinetic friction.

The activity investigates conservation of energy. Some topics explored are friction, kinetic energy, conservation of energy, and potential energy. The resource consists of video clips, lecture notes, practice problems, and exam...

Through illustrated examples and interactive practice problems, students find the value of forces acting upon objects using force equations.

This lesson will introduce forces and give an overview of some different types of forces.